So I followed the crowd on here and bought one. Made my skin horrendous for the first couple of weeks but then I turned a corner and skin has improved no end since then. I've been on antibiotics for my skin for >10 years and I've used everything going, including the v expensive and hardcore Obagi system. This is the first thing that's truly made a difference and today, I went out with no foundation or make up at all. My skin is bright and even and clear! Thank you so much mumsnet. It might not have changed my life but it has made my hormonal, temperamental skin better than it's been in years.